SHOP MANUAL
Paragraphs 73-77
Fig. 135-Exploded view of
governor flyweight and
associated parts used on
1210 and 1310 models.
1.
Camshaft
2.
Bearing
3.
Spacers
4.
Tachometer drive gear
5.
Camshaft gear
6. Drive pins
7.
Flyweight assy.
8. Shim
9. Snap ring
10.
Shim
11.
Slider
12.
Collar
Models 1500-1700-1710-1900-
1910-2110
73,
The governor assembly is located
on rear end of the injection pump cam-
shaft within the injection pump housing.
The injection pump and governor should
be serviced only by an authorized diesei
injection service center,
INJECTOR NOZZLES
All Models
75.
TESTING AND LOCATING A
FAULTY NOZZLE. If rough or uneven
engine operation, or misfiring indicates
a faulty nozzle, the defective unit can
usually be located as follows:
With engine running at the speed
where malfunction is most noticeable,
loosen compression nut on high pressure
line for each injector in turn allowing
fuel to escape at the nut rather than
enter the cylinder. If engine operation is
not affected when injector line is loos-
ened, that is the cylinder that is misfir-
ing.
If a faulty injector is found and consid-
erable time has elapsed since injectors
have been serviced, it is recommended
that all injectors be removed and serv-
iced, or that new or reconditioned units
be installed. Refer to the following
Fig. 136-Exploded view of
governor linkage used on
1210 and 1310 models.
1.
spring
2.
Lever
3.
Lever
4.
Arm
5.
Spring
(),
Arm
7.
Control lever
8. Stop bolt bracket
9. Lever
10.
Spring
11.
Arm
12.
Leaf spring
paragraphs for removal and test pro-
cedures.
76,
REMOVE AND REINSTALL.
Before removing injector lines and injec-
tors,
thoroughly clean injectors and sur-
rounding area. Remove fuel leak-off
lines and high pressure lines. Unscrew
nozzle assembly from cylinder head.
Precombustion chambers (Fig. 140)
are fitted in cylinder head on 1100,1110,
1200,
1210, 1300, 1310, 1510 and 1710
models. The glow plugs must be re-
moved before attempting to remove the
prechambers. A special tool (Nuday No,
1589) is available for removing pre-
chamber retaining ring
(4).
Remove cyl-
inder head and tap out prechambers
from underside of head, or use a suitable
puller and slide hammer to remove pre-
chambers.
Install injectors using new gaskets.
Tighten injectors to a torque of 59-69
N-m (43-51 ft.-lbs.).
77.
TESTING. A complete job of
testing and adjusting injector nozzles re-
quires use of special test equipment.
Nozzle should be tested for opening
pressure, seat leakage and spray pat-
tern. When tested, nozzle should open
with a buzzing sound, and cut off quickly
at end of injection.
WARNING: Fuel leaves injector nozzle
with sufficient force to penetrate the skin.
Keep exposed portions of your body clear
of nozzle spray when testing.
Before conducting tests, operate
tester lever until fuel fiows, then attach
injector to tester. Operate tester lever a
few quick strokes to purge air from in-
jector and to make sure that nozzle valve
is not stuck.
Fig. 137-On 1210 and 1310 models, align
groove
In
governor
arm
shaft with slot
In
control
lever as shown at
(A).
51
To Next Page
Loading...
